Internal-combustion engine



J. F. HAUSSMANN.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JUNE 2251920.

Patented Jan. 3, 1922:.

{ya/MW? 210. 721 F. Ha us smann Mme JOHN F. HAUSSMANN, OF MILWAUKEE, WISCONSIN.

INTERNAL-COMBUSTION ENGINE.

Application filedJune 22 To all whom it may concern: v

Be it known that I, JOHN F. HAUSSMANN, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Internal-Combustion Engines; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to new and useful improvements in engines, and pertains particularly to internal combustion engines, gmploying ordinary commercial combustible It is the primary object of this invention to provide an engine of this character having a pair of simultaneously operable pistons working in the. same cylinder and driven by the same fuel explosions,

It is also an object of this invention to provide an internal combustion engine with means for preventing the parts stopping on dead center when the operation is discontinued.

A further object of the invention is to provide an engine having a pair'of pistons operable at the same time in the same cylinder with means for connecting both of said pistons to a single crank shaft.-

'With these general objects in view, the invention resides in the novel features of construction, combination and arrangement of parts which will be hereinafter more. particularly described and claimed.

In the accompanying drawing the figure represents a vertical longitudinal sectlonal view through an internal combustlon engine embodying J the principal features of my invention.

Referring more particularly to this illustration, it will be'noticed that I have shown various changes may be made in the form and proportions of the different parts of the invention without departing from the principles thereof or sacrificing any of its advantages.

In the type of engine shown, the lower end of the cylinder 2 which is bolted to the base 1 is open, and likewise if desirable Specification of Letters Patent.

. Patented Jan. 3,1922.

1920. Serial No. 390,712.

the top may be open, the same Ehav'ing,

however, a centrally positioned bearing 3 in which a piston rod 4 'reciprocates, The piston 5 which is secured rigidly to this rod 4. forms the upper piston which is operable in th cylinder 2. A lower piston 6 is also ongitudina'lly slidable within the cyliner Y In the base 1 is journalled a crank shaft 7 having a crank 8 with which the connecting rod 9 is connected. The upper end portion of the connecting rod 9 extends into the cylinder 2 and has a piston 6 pivoted thereto by means of a wrist pin 10. Obviously the-movement of the piston 6 within the cylinder 2 rotates the crank shaft 7 as is customary in similar engines.

Inasmuch as is necessary for the piston rod 4 to slide longitudinally of the cylinder 2, a somewhatdifi'erent means is employed for connecting the same to the crank shaft 7. 'In other words a rocker arm 11 is pivoted to the upper or outer end of the piston rod, and to one end thereof a relatively long link 12 is pivoted, the lower end of this link being similarly secured to one arm 13 of a bellcrank 14. The same 'is fulcrumed on a bracket car 15 extending from one side of the base 1, and has its otherarm -16 connected with the connecting rod 9 by link 17. A pivot 18 is formed on the connecting rod 9 for the link 17 at a 7 point spaced from the crank pin 19.

On the side of the base 1 opposite the bracket ear 15 there is formed or secured a 'bracket arm 20, and a bellcrank 21 is fulcrumed thereto. One arm 22 of the bell-crank 21 is connected by link 23 with the longer 4 portion of the rocker arm 11, whereas the other arm 24 has a link 25 pivoted thereto. This link 25 like the link 17, is pivoted as at 18 to the connecting rod 9 atapoint spaced from a crank pin 19.

As, is, customary in internal combustion engines, the combustible fuel is admitted into the cylinder, and after being exploded by the aid of a spark plug or the like 26, the resulting exhaust gases are expelled through an outlet port controlled by a suitable valve. In the present drawing one of these control valves is illustrated and designated by the reference character 27 When a fuel charge has been compressed between the pistons 5 and 6 and is ignited by an electric spark, the expansion thereof will force the said pistons away from each other v as tosize and proportions and so assembled with respect to each other and to the piston rod 4 and crank shaft 7, that the parts cannot stop on dead center when the operation of the engine is discontinued. In other Words, the relation of the various parts of the invention is such that one of the pistons will be at the start of its return or exhaust stroke just prior to the' completion of the power stroke of the other piston.

I claim: I 1. In an engine, a cylinder having inlet and'outlet ports, a crank shaft, a pair of' pistons in said cylinder, the same being simultaneously reciprocated by the power exerted by the same charge of motive fluid, a connecting rod between one of said pistons and the crank shaft, a rigid piston rod secured to the other piston, a bellcrank pivoted on each side of the line of movement of the pistons, a link connecting one arm of each bellcrank with said crank shaft, and a link connecting the other arm of each bellcrank with said piston rod.

2. In an engine, a cylinder having inlet and outlet ports, a crank shaft, a pair of opposed piston heads in said cylinder, a

connecting rod pivotally connected at one end to one of said piston heads and j ournaled at the other end to the crank shaft, a piston rod rigidly secured to theother piston head, a rocker arm pivoted to the outer end of the rigid piston rod, a pair of bellcranks mounted on opposite sides of thecylinder, a link connection between one end of each bell crank and the journaled end of the connectingv rod, and a link connection between the other end of each bellcrank and the corresponding end of the rocker arm.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of Wisconsin.

JOHN F. HAUSSMANN; 

